Boring blade can be tungsten carbide, ceramic, cermet, PCD, PCBN cutting tools of different materials. Most tungsten carbide boring blade adopt PVD or CVD coating. For example, PVD TiN coating suitable for machining high-temperature alloys and austenitic stainless steel; widely PVD TiAlN coating applications, most suitable for processing steel , titanium , cast iron and non-ferrous alloys. Both coatings are well coated with the thermal deformation and interrupted cutting ability of anti-carbide substrate. Such tungsten carbide substrate comprising tungsten carbide and about 94% to about 6% cobalt, is the industry code provides the C-3 and C-4 series, the equivalent standard ISO K-10 ~ K-20, M-10 ~ M-25 and P-10 ~ P-20 series.
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